JSFiddle - React, Tailwind, and code Playground

HTML

<input type="text" id="fake_input" placeholder="Input here" />
<div id="result"></div>

JavaScript

function is_char(e){
  return (!e.ctrlKey && !e.altKey && !e.metaKey &&
                        (e.keyCode >= 65 && e.keyCode <= 90) || 
                        (e.keyCode >= 97 && e.keyCode <= 122)
                );
}
$('#fake_input').keypress(function(e){
    $('#result').append(String.fromCharCode(e.which) + '<br />');
}).focus();